I read a (small) thread on this on Reddit, and bar a few extremists, even other trans people are calling this bs and calling Thomas daft. Several transwomen in that thread were saying "been on HRT x years and still have an advantage over cis women".
As long as women fight back on this, there is enough evidence that in sport the TRAs won't win. Not at the elite level anyway. They will weasel their way into amateur sport and youth sport potentially, thus reducing the pool of girls and women, but at the elite level the evidence is just too overwhelming.